What is Silphen DM Cough: Uses, Warnings & Interactions

Your doctor will tell you how much medicine to use. Do not use more than directed.

Follow the instructions on the medicine label if you are using this medicine without a prescription.

Oral routeYou may take this medicine with or without food.

The chewable tablet can be chewed or crushed or swallowed whole. Drink plenty of water after swallowing the tablet.

Slowly dissolve the lozenge in your mouth.

Shake the oral liquid well just before each use. Measure the oral liquid medicine with a marked measuring spoon, oral syringe, or medicine cup.

Take the missed dose as soon as you remember. It is not usually a concern if you miss one dose.

Skip the missed dose if it is almost time for your next dose.

You should not use two doses at the same time.

You should not use this medicine if you have had an allergic reaction to dextromethorphan. You should not use this medicine if you are also using an MAO inhibitor (such as Parnate®, Nardil®, or Marplan®) or if you have used one of these medicines in the past 2 weeks. Do not give any over-the-counter (OTC) cough and cold medicine to a baby or child under 4 years old. Using these medicines in very young children might cause serious or possibly life-threatening side effects.

Make sure your doctor knows if you are pregnant or breastfeeding, or if you have asthma or liver disease.

This medicine may make you dizzy or drowsy. Avoid driving, using machines, or doing anything else that could be dangerous if you are not alert.

Make sure your doctor knows if you are pregnant or breastfeeding, or if you have asthma or liver disease.

This medicine may make you dizzy or drowsy. Avoid driving, using machines, or doing anything else that could be dangerous if you are not alert.